 (def teensy-holder-hole
   (->> (cube teensy-holder-width 30 teensy-holder-height)
        (translate [(/ teensy-holder-width -2) -15 (/ teensy-holder-height 2)])
-       (rotate teensy-holder-angle [0 0 -1])
        (translate [(first teensy-top-xy) 
                    (- (second teensy-top-xy) 1) 
                    0])))

                    case-walls 
                    thumbcaps
                    caps
                    ; teensy-holder
                    ; ; teensy-holder-hole
                    ;             screw-insert-outers 
                    ;             teensy-screw-insert-holes

;; Shape parameters ;;
;;;;;;;;;;;;;;;;;;;;;;

(def nrows 5)
(def ncols 6)

(def α (/ π 12))                        ; curvature of the columns
(def β (/ π 36))                        ; curvature of the rows
